class ElementInput
  attr_reader :content
  def initialize
  @content = <<OUTPUT
)O+_06 element  (WARNING: Do not delete this line!!)
) Lines beginning with `)' are ignored.
)---------------------------------------------------------------------
 number of input files = 1
)---------------------------------------------------------------------
) List the input files, one per line
 ./out/xv.out
)---------------------------------------------------------------------
 type of elements (central body, barycentric, Jacobi) = Cen
 minimum interval between outputs (days) = 365.2d1
 express time in days or years = years
 express time relative to integration start time = yes
)---------------------------------------------------------------------
) Output format? (e.g. a8.4 => semi-major axis with 8 digits & 4 dec. places)
 a8.4 e8.4 
)---------------------------------------------------------------------
) Which bodies do you want? (List one per line or leave blank for all bodies)
)
OUTPUT
  end
end
